[Linux-cluster] Queston about rh cluster suite 3

[carlopmart]

Hi all,

  I have a customer who needs to deploy RHCS 3 on two nodes using 
TrendMicro IMSS 5.7 with RHEL 3. And i have two questions:

  - Which type of power swithes I need to accomplish this?? i can not 
found anything about it on RedHat's website. Is it posible to use 
serial null cable instead a power switch?

  - Can I do active/active configuration for postfix and IMSS 
services?? Somebody has test it?

Thanks.

-- 
CL Martinez
carlopmart {at} gmail {d0t} com